Electric-welding tool



"Feb. 15,1927. 7,3

DE ELBERT A. REYNOLDS ELECTRIC WELDING T001.

Filed Feb. 19. 19.25

. ATTORNEY.

Patented Feb. 15, 1927.

UNITED STATES 1,617,354 PATENT OFFICE.

DE manner a. REYNOLDS, or Yommas, NEW Yoax;

ELECTRIC-WELDING TOOL.-

Application filed February 19, 1925. Serial No. 10,165.

This invention pertains ,to certain new and useful improvements inportable electricwelding tools.

. An objectof this invention 1s to provide a simple, cheap and effectivedevice for electrical welding, where the electrical current may bedirectly conveyed to the partsto be welded without danger to theoperator while simultaneously handling the parts to perform the desiredmechanical operations. This device is of special importance in themanufacture ofsmall articles such as radio receiving sets and the like.

In one form of my invention, I prefer to make the device in the form ofa pair of pliers constructed of fiber, condensite or othernon-electrically conducting material,

the outer ends of the pliers being distended,-

and upon which are respectively fitted metal jaws of desired varied formto adapt the device to the particular character of work as to locate theinsulate to be performed. These jaws are respecthe following detaildescription and the ac-' .companying drawings, in which- Fig. .1 is aplan view of one form of my. invention;

Figs. 2, 3, 4 and 5 are detail plan views of different forms of aws forattachment to the plier form of my invention.

Referring to the drawings, 1 and 1 rep 'resent the handles of a pair ofplier members of non-electrically conducting material,

which are hinged at 2 in the usual manner as in the ordinar pair ofpliers of metallic construction, an normally held in a distendedcondition by the spring 3. One handle 1 of the pliers is preferablygroove? in its inner face 4, to receive the cord 0 insulated wires 4*,conveying the electrical current from any suitable source of electricalsupply. One form of jaws 6 and 6 are Sl'lOWIllI'l Fig. 1 and each jaw 5,5 is provided at its inner end with a recess 6, .r 6 snugly receivingone of the projections 7 7 at the forward ends of the non-elec tricallyconducting handles 1, 1 The exposed wire terminals 8, 8 are filled inthe faces of the projections 7 7 0). the set of the shorter juxtaposedends of the plier members to electrically contact with the re I spectivejaws 5,. 5* b frictional engagement.

The openings 9 an 9 are provided in the pro ections 7, 7 respectivelyregistering with similar openings 10, 1O in the jaws 5, 5" for receivingthe locking pins 11, 11

respectively.

The 'aws 5, 5 are preferably provided with t especial contact points 12,12 usually located adjacent the extremities of the inner faces of thejaws 5, 5 to attain a localized mechanical engagement with the parts,grasped by the jaws 5, 5'? and simultangously a'locahzed electricalcontact therewit i In Fig. 3, I have illstrated another form of plierjaws 13, 13 which are shaped with converging, reduced forward ends 14,14

for simultaneous mechanical and electrical engagement without theprovision of special electrical contacts. The rearward ends are providedwith the recesses 6, .6? similarly as above described for receiving theprojections 7, 7 of the plier handles 1, 1 and openings 10, 10* for thelocking pins 11, 11.

Fig. 4 shows another form of jaws 15, 15 of relativel sharp and bluntshape and bent at their orward ends 16, 16 toward one another, similarlyas in the construction of Fig. 3.

The form of jaws shown in Fig. 4 is particularly adapted for holding apair of wires to be welded or soldered to one another and for suchpurpose I- provide the grooves 16, 16 respectively adjacent theextremities of the aws.15, 15 and cam locking members 17, 17,respectively eccentrically pivoted at 18, 18 and provided with themanipulating projections 19 19, whereby each wire may e-locked within agroove of the jaws.

Fig. 5 illustrates a form of spider plier jaws 20, 20 which .are bentconvergingly at their ends 21, 21.

From the above, itwill be perceived that mfv form of pliers is adaptedfor many forms 0 operations of simu taneous mechanical handling andelectrical soldering or welding by a single operation and if desiredsolely by the use of one hand of the operator, and at all times theoperator is protected from the physical contact with the electricalparts.

ing plug may be located in the cord 4*,

adjacent the end of the'handle 1 to facilitate cutting off theelectrical current when changing the form of jaws and also when thepliers are laid down idly'orstored.

The jaws may be secured to the pliers by frictional fit, in whichcircumstance each recess 6, 6 is preferably of wedge form,

the wedge converging in the direction toward the inner face of the jawto thereby attain maximum frictional contact when pressure is applied tothe handles against the work.

In the use of my invention, it is only necessary to bring the parts tobe electrically welded together between the contact points 12, 12 on theconverging ends of the respective jaws under a slight pi'essure inorderto heat the parts while simultaneousl fusing the solder appliedthereto or to sufli ciently fuse the metal parts adjacent the points ofengagement to autogenously weld the parts to one another. My inventionalso protects the operator from the effect of the, heat developed in thesoldering or weldingoperation by reason of the heat insulation affordedby my pliers or frame.

Whereas I have described my invention by reference to specific formsthereof it will be understood that many changes and modifications may bemade without departing from the spirit of the invention.

I claim:

'1. In weldin pliers, a pair of plier members including handles havingexterior surfaces wholly of electrically non-conducting material, meansfor pivotally connecting said plier members to one another intermediatetheir ends, a pair of insulated electrical conductors carried by saidhandles, the ends of said electrical conductors being exposed andpositioned at one set of the'juxtaposed ends of said plier membersrespectively, and a pair of jaws of electrically conducting ma terialsecured respectively to said juxtaposed ends of said plier members andrespectively their ends a air of insulated electrical conductors carriedby said handles. the ends of said electrical conductors being exposedand positioned at one set of the juxtaposed ends of said plier membersrespectively, a pair of jaws of electrically conducting material andmeans for rcmovably securing said jaws respectively to said juxtaposedends of the plier members and in contact with said exposed ends of theelectrical conductors respectively.

3. In welding pliers, a pair of plier members including handles havingexterior surfaces wholly of electrically non-conducting material, meansfor pivotally connecting said plier members to'one another intermediatetheir ends, a pair of insulated electrical conductors carried by one ofsaid handles, the ends of said electrical conductors being exposed andpositioned at one set of the juxtaposed ends of said plier membersrespectively, and a pair of jaws of electrically conducting materialsecured respectively to said juxtaposed ends of said plier members andrespectively in contact with said exposed ends of the electricalconductors.

4. In welding pliers, a pair of plier members including handles havingexterior surfaces wholly of electrically non-conducting material, meansfor pivotally connecting said plier members to one another intermediatetheir ends, a pair of insulated electrical conductors carried by saidhandles, the ends

